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Journal articles on the topic 'Iron-based superconductors'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Chen, Xianhui, Pengcheng Dai, Donglai Feng, Tao Xiang, and Fu-Chun Zhang. "Iron-based high transition temperature superconductors." National Science Review 1, no. 3 (July 3, 2014): 371–95. http://dx.doi.org/10.1093/nsr/nwu007.

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Abstract In a superconductor electrons form pairs and electric transport becomes dissipation-less at low temperatures. Recently discovered iron-based superconductors have the highest superconducting transition temperature next to copper oxides. In this article, we review material aspects and physical properties of iron-based superconductors. We discuss the dependence of transition temperature on the crystal structure, the interplay between antiferromagnetism and superconductivity by examining neutron scattering experiments, and the electronic properties of these compounds obtained by angle-resolved photoemission spectroscopy in link with some results from scanning tunneling microscopy/spectroscopy measurements. Possible microscopic model for this class of compounds is discussed from a strong coupling point of view.

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2

Day, Charles. "Iron-based superconductors." Physics Today 62, no. 8 (August 2009): 36–40. http://dx.doi.org/10.1063/1.3206093.

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3

Changjan, Arpapong, and Pongkaew Udomsamuthirun. "London Penetration Depth of Fe-Based Superconductors." Advanced Materials Research 979 (June 2014): 297–301. http://dx.doi.org/10.4028/www.scientific.net/amr.979.297.

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Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. Fe-based superconductors are superconductors whose containing iron compounds and having a very high critical magnetic field. London penetration depth can assist in the study of the behavior of the critical magnetic field. The London penetration depth is the distance to which a magnetic field penetrates into a superconductor and becomes equal to 0.367879 times that of the magnetic field at the surface of the superconductor. In this paper, the London penetration depth of Fe-based superconductors is studied by Ginzburg-Landau scenery. Free energy of Fe-based superconductors is assumed by modified the free energy of two-band magnetic superconductors model and theof Fe-based superconductors is derived analytically. Finally, the temperature dependence of is investigated and applied to Single-Crystal superconductors.

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4

Stajic, J. "Describing iron-based superconductors." Science 346, no. 6211 (November 13, 2014): 823–24. http://dx.doi.org/10.1126/science.346.6211.823-d.

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5

YOSHIZAWA, MASAHITO, and SHALAMUJIANG SIMAYI. "ANOMALOUS ELASTIC BEHAVIOR AND ITS CORRELATION WITH SUPERCONDUCTIVITY IN IRON-BASED SUPERCONDUCTOR Ba(Fe1-xCox)2As2." Modern Physics Letters B 26, no. 19 (June 27, 2012): 1230011. http://dx.doi.org/10.1142/s0217984912300116.

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Elastic properties of iron-based superconductor Ba ( Fe 1-x Co x)2 As 2 with various Co concentrations x were reviewed. Among all elastic constants, C66 shows remarkable softening associated with the structural transition from tetragonal to orthorhombic. The amount of anomaly in C66 is 90% for the underdoped samples of x < 0.07 For the overdoped samples, the anomalies in C66 gradually disappear with the increasing of Co concentration. The elastic compliance S66 (= 1/C66) shows a quantum critical behavior, which behaves just like the magnetic susceptibility of unconventional superconductors. There exists a clear correlation between the superconducting transition temperature and the amount of anomaly in S66. It was suggested that the structural fluctuation, which is measured by S66, plays an important role in the emergence of superconductivity. The elastic anomaly of Ba ( Fe 1-x Co x)2 As 2 is characterized by a strong electron–lattice coupling, which would be originated from the 3d orbitals of iron. This might be a universal phenomenon not only in iron-based superconductors but also d-electron based superconductors. The results on Ba ( Fe 1-x Co x)2 As 2 would reveal relevant roles of the structural fluctuations due to the orbitals, which should be taken into account for the understanding of a whole picture of the superconductivity in iron-based superconductors and related materials.

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6

MIN, Byeong Hun, and Yong Seung KWON. "Iron-based High-TC Superconductors." Physics and High Technology 23, no. 4 (April 30, 2014): 21. http://dx.doi.org/10.3938/phit.23.013.

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7

JANKOWSKI, Arkadiusz. "Iron - based superconductors - development prospects." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 1 (January 5, 2018): 47–50. http://dx.doi.org/10.15199/48.2018.01.12.

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8

Hosono, Hideo, and Zhi-An Ren. "Focus on Iron-Based Superconductors." New Journal of Physics 11, no. 2 (February 27, 2009): 025003. http://dx.doi.org/10.1088/1367-2630/11/2/025003.

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9

ZHANG, A. M., and Q. M. ZHANG. "RAMAN SCATTERING IN IRON-BASED SUPERCONDUCTORS." Modern Physics Letters B 26, no. 28 (October 8, 2012): 1230020. http://dx.doi.org/10.1142/s0217984912300207.

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Iron-based superconducting layered compounds have the second highest transition temperature after cuprate superconductors. Their discovery is a milestone in the history of high-temperature superconductivity and will have profound implications for high-temperature superconducting mechanism as well as industrial applications. Raman scattering has been extensively applied to correlated electron systems including the new superconductors due to its unique ability to probe multiple primary excitations and their coupling. In this review, we will give a brief summary of the existing Raman experiments in the iron-based materials and their implications for pairing mechanism in particular. And we will also address some open issues from the experiments.

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10

Tang, Shaoqiang, Hogliang Pan, and Zhao Xu. "Progress in the research of copper-oxide superconductors." Transportation Systems and Technology 4, no. 3 suppl. 1 (November 19, 2018): 203–11. http://dx.doi.org/10.17816/transsyst201843s1203-211.

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Since H·Carvalin·Onnesse discovered the superconductivity of mercury in 1911, we have made progress in the research of the superconductor and the superconductor have evolved from single element, alloy to complex compounds with multiple elements.With the development of the research about new superconducting materials, the research of iron based superconductors, copper-oxide superconductor and magnesium boride superconductor is the latest research trend. So far the proved highest superconducting transition temperature of copper-oxide superconductor is 130 K under normal pressure and could reach more than 160 K under high pressure. Based on the experience accumulated in past decades, we propose some general introduction about the main structure type, the superconducting principle and the application of copper-oxide superconductor.It is expected that a positive effect would be made in the research of copper-oxide superconductor. Background: Since H·Carvalin·Onnesse discovered the superconductivity of mercury in 1911, we have made progress in the research of the superconductor and the superconductor have evolved from single element, alloy to complex compounds with multiple elements. Aim: The purpose of this paper is to explain the differences between copper oxide superconductors and conventional superconductors and their superconducting mechanism. Methods: The superconducting mechanism and structure of copper oxide superconductors were analyzed by means of literature investigation, conceptual analysis and comparative study. Results: In this paper, the different structure forms of copper oxide are analyzed, and its superconducting mechanism is described in detail. The applications of several main copper oxide superconductors are introduced. Conclusion: Based on the experience accumulated in past decades, we propose some general introduction about the main structure type, the superconducting principle and the application of copper-oxide superconductor.It is expected that a positive effect would be made in the research of copper-oxide superconductor.

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11

Shamoto, S., S. Wakimoto, K. Kodama, M. Ishikado, A. D. Christianson, M. D. Lumsden, R. Kajimoto, et al. "Neutron scattering of iron-based superconductors." Physica C: Superconductivity and its Applications 471, no. 21-22 (November 2011): 639–42. http://dx.doi.org/10.1016/j.physc.2011.05.015.

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12

Lv, B., R. B. Xie, S. L. Liu, G. J. Wu, H. M. Shao, and X. S. Wu. "The Magnetoresistance in Iron-based Superconductors." Journal of Magnetics 16, no. 2 (June 30, 2011): 192–95. http://dx.doi.org/10.4283/jmag.2011.16.2.192.

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13

Kamihara, Yoichi. "Current status of iron-based superconductors." Hyperfine Interactions 208, no. 1-3 (January 20, 2012): 123–31. http://dx.doi.org/10.1007/s10751-012-0563-1.

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14

Hu, Jiangping, and Cenke Xu. "Nematic orders in iron-based superconductors." Physica C: Superconductivity 481 (November 2012): 215–22. http://dx.doi.org/10.1016/j.physc.2012.05.002.

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15

Sadovskii, M. V., E. Z. Kuchinskii, and I. A. Nekrasov. "Iron based superconductors: Pnictides versus chalcogenides." Journal of Magnetism and Magnetic Materials 324, no. 21 (October 2012): 3481–86. http://dx.doi.org/10.1016/j.jmmm.2012.02.071.

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16

Fujitsu, S., S. Matsuishi, and H. Hosono. "Iron based superconductors processing and properties." International Materials Reviews 57, no. 6 (November 2012): 311–27. http://dx.doi.org/10.1179/1743280412y.0000000004.

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17

Chubukov, Andrey, and Peter J. Hirschfeld. "Iron-based superconductors, seven years later." Physics Today 68, no. 6 (June 2015): 46–52. http://dx.doi.org/10.1063/pt.3.2818.

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18

Di Gioacchino, Daniele, A. Puri, A. Marcelli, and Naurang Lal Saini. "Flux Dynamics in Iron-Based Superconductors." IEEE Transactions on Applied Superconductivity 23, no. 3 (June 2013): 7300505. http://dx.doi.org/10.1109/tasc.2012.2234500.

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19

Charnukha, A. "Optical conductivity of iron-based superconductors." Journal of Physics: Condensed Matter 26, no. 25 (June 5, 2014): 253203. http://dx.doi.org/10.1088/0953-8984/26/25/253203.

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20

Aswathy, P. M., J. B. Anooja, P. M. Sarun, and U. Syamaprasad. "An overview on iron based superconductors." Superconductor Science and Technology 23, no. 7 (June 24, 2010): 073001. http://dx.doi.org/10.1088/0953-2048/23/7/073001.

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21

Seidel, Paul. "Josephson effects in iron based superconductors." Superconductor Science and Technology 24, no. 4 (February 17, 2011): 043001. http://dx.doi.org/10.1088/0953-2048/24/4/043001.

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22

Yin, Wei-Guo, Chi-Cheng Lee, and Wei Ku. "Magnetic softness in iron-based superconductors." Superconductor Science and Technology 25, no. 8 (July 17, 2012): 084007. http://dx.doi.org/10.1088/0953-2048/25/8/084007.

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23

Park, K. S., D. Kim, H. Han, and C. H. Park. "Current issues of iron-based superconductors." Current Applied Physics 11, no. 3 (May 2011): S33—S41. http://dx.doi.org/10.1016/j.cap.2011.04.015.

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24

Sefat, Athena S. "Bulk synthesis of iron-based superconductors." Current Opinion in Solid State and Materials Science 17, no. 2 (April 2013): 59–64. http://dx.doi.org/10.1016/j.cossms.2013.04.001.

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25

Eisterer, M. "Radiation effects on iron-based superconductors." Superconductor Science and Technology 31, no. 1 (December 7, 2017): 013001. http://dx.doi.org/10.1088/1361-6668/aa9882.

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26

Ali Mohammed, Hussein. "Structures of vortex in Co-doped BaFe2As2 iron superconductors with different doping level by scanning Hall probe microscopy." Tikrit Journal of Pure Science 22, no. 11 (October 28, 2018): 55. http://dx.doi.org/10.25130/j.v22i11.720.

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The 122 iron arsenide unconventional superconductors are part of a new class of iron-based superconductors. Co-doped BaFe2xCoxAs2 (Ba-122) iron superconductors sample have been examine by scanning Hall probe microscopy (SHPM) technique to find out the magnetic properties of Ba-122 . Has been completed the evolution of profiles of vortices which has well isolated and it is as function of temperature, then utilized suitable technique to extract the temperature depending on penetration depth, .So, this allowed to deduce the temperature dependent on density of superfluid and it has been compared with α-model consequences for a (2-band) of superconductor. When the superfluid density for the BaFe2xCoxAs2 (Over D x= 0.113) sample. As result, the two gap -model has been fitted to the data with Δ1=4.25kTc, Δ2=1.92kTc , =0.708, 1=0.293 then a2=1. However, When values of for the BaFe2-xCoxAs2 (Over D x= 0.075) sample. Result of the superfluid density for BaFe2-xCoxAs2 with parameters are (Δ1=3.9k, Δ2=1.6k), =0.615 for Δ1, and =0.237, =1. Suitable parameters produce refer into the symmetry of the order parameter at hole pockets with the electron, and then the relative supports of the bands to the density of superfluid in the iron-based crystals.

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27

Pradhan, B., S. K. Goi, and R. N. Mishra. "Specific Heat Investigation in Iron-Based Superconductors." SPIN 08, no. 02 (June 2018): 1850001. http://dx.doi.org/10.1142/s2010324718500017.

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We have proposed a mean field theoretical model in the coexistence of superconductivity and Jahn–Teller (JT) effect for the study of specific heat in iron-based superconductors in the presence of an external magnetic field. The superconducting (SC) gap and lattice strain energy expressions are calculated using Zubarev’s technique of double-time electron Green’s function and solved numerically. The specific heat jump at the critical temperatures are observed. Keeping fixed the SC transition temperature at 28[Formula: see text]K for the iron pnictide [Formula: see text] like superconductors, the coefficient of electronic specific heat [Formula: see text] at low temperatures is determined to be 5.75[Formula: see text]mJ/mol[Formula: see text]K2 in the pure SC state and 4.76[Formula: see text]mJ/mol[Formula: see text]K2 in the coexistence state of SC and JT effect which are in agreement with some experimental results. The effect of the external magnetic field on the specific heat is studied.

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28

Ong, Tzen, Piers Coleman, and Jörg Schmalian. "Concealed d-wave pairs in the s± condensate of iron-based superconductors." Proceedings of the National Academy of Sciences 113, no. 20 (May 2, 2016): 5486–91. http://dx.doi.org/10.1073/pnas.1523064113.

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A central question in iron-based superconductivity is the mechanism by which the paired electrons minimize their strong mutual Coulomb repulsion. In most unconventional superconductors, Coulomb repulsion is minimized through the formation of higher angular momentum Cooper pairs, with Fermi surface nodes in the pair wavefunction. The apparent absence of such nodes in the iron-based superconductors has led to a belief they form an s-wave (s±) singlet state, which changes sign between the electron and hole pockets. However, the multiorbital nature of these systems opens an alternative possibility. Here, we propose a new class of s± state containing a condensate of d-wave Cooper pairs, concealed by their entanglement with the iron orbitals. By combining the d-wave (L=2) motion of the pairs with the internal angular momenta I=2 of the iron orbitals to make a singlet (J=L+I=0), an s± superconductor with a nontrivial topology is formed. This scenario allows us to understand the development of octet nodes in potassium-doped Ba1−x KXFe2As2 as a reconfiguration of the orbital and internal angular momentum into a high spin (J=L+I=4) state; the reverse transition under pressure into a fully gapped state can then be interpreted as a return to the low-spin singlet. The formation of orbitally entangled pairs is predicted to give rise to a shift in the orbital content at the Fermi surface, which can be tested via laser-based angle-resolved photoemission spectroscopy.

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29

Takahashi, Hiroki, Hiroyuki Takahashi, Takahiro Tomita, Hironari Okada, Yoshikazu Mizuguchi, Yoshihiko Takano, Satoru Matsuishi, Masahiro Hirano, and Hideo Hosono. "High-Pressure Studies for Iron-Based Superconductors." Japanese Journal of Applied Physics 50, no. 5S2 (May 1, 2011): 05FD01. http://dx.doi.org/10.7567/jjap.50.05fd01.

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30

MIURA, Masashi, and Hirofumi YAMASAKI. "Feature: Materials Science in Iron-based Superconductors." TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 52, no. 6 (2017): 382. http://dx.doi.org/10.2221/jcsj.52.382.

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31

Zhao, Zhongxian, Xiaoli Dong, and Liling Sun. "A few points on iron-based superconductors." Solid State Communications 152, no. 8 (April 2012): 660–65. http://dx.doi.org/10.1016/j.ssc.2011.12.033.

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32

Zhang, Peng, Zhijun Wang, Xianxin Wu, Koichiro Yaji, Yukiaki Ishida, Yoshimitsu Kohama, Guangyang Dai, et al. "Multiple topological states in iron-based superconductors." Nature Physics 15, no. 1 (September 24, 2018): 41–47. http://dx.doi.org/10.1038/s41567-018-0280-z.

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33

Fang, Ai-Hua, Fu-Qiang Huang, Xiao-Ming Xie, and Mian-Heng Jiang. "High Efficient Synthesis of Iron-based Superconductors." Physics Procedia 36 (2012): 485–90. http://dx.doi.org/10.1016/j.phpro.2012.06.222.

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34

Carretta, P., R. De Renzi, G. Prando, and S. Sanna. "A view from inside iron-based superconductors." Physica Scripta 88, no. 6 (December 1, 2013): 068504. http://dx.doi.org/10.1088/0031-8949/88/06/068504.

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35

You, Yi-Zhuang, and Zheng-Yu Weng. "Two-fluid description for iron-based superconductors." New Journal of Physics 16, no. 2 (February 4, 2014): 023001. http://dx.doi.org/10.1088/1367-2630/16/2/023001.

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36

Takahashi, Hiroki, Hiroyuki Takahashi, Takahiro Tomita, Hironari Okada, Yoshikazu Mizuguchi, Yoshihiko Takano, Satoru Matsuishi, Masahiro Hirano, and Hideo Hosono. "High-Pressure Studies for Iron-Based Superconductors." Japanese Journal of Applied Physics 50, no. 5 (May 20, 2011): 05FD01. http://dx.doi.org/10.1143/jjap.50.05fd01.

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37

YANG, Run, Bing XU, YaoMin DAI, and XiangGang QIU. "Infrared study of the iron-based superconductors." SCIENTIA SINICA Physica, Mechanica & Astronomica 48, no. 8 (July 10, 2018): 087403. http://dx.doi.org/10.1360/sspma2018-00101.

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38

Romero, A. H., and M. J. Verstraete. "A theoretical approach to iron-based superconductors." Annalen der Physik 523, no. 7 (June 28, 2011): 580–81. http://dx.doi.org/10.1002/andp.201110469.

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39

Ren, Zhi-An, and Zhong-Xian Zhao. "Research and Prospects of Iron-Based Superconductors." Advanced Materials 21, no. 45 (December 4, 2009): 4584–92. http://dx.doi.org/10.1002/adma.200901049.

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40

Prozorov, Ruslan, Alex Gurevich, and Graeme Luke. "The electromagnetic properties of iron-based superconductors." Superconductor Science and Technology 23, no. 5 (April 23, 2010): 050201. http://dx.doi.org/10.1088/0953-2048/23/5/050201.

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41

Gurevich, A. "Iron-based superconductors at high magnetic fields." Reports on Progress in Physics 74, no. 12 (September 12, 2011): 124501. http://dx.doi.org/10.1088/0034-4885/74/12/124501.

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42

Prozorov, R., and V. G. Kogan. "London penetration depth in iron-based superconductors." Reports on Progress in Physics 74, no. 12 (September 22, 2011): 124505. http://dx.doi.org/10.1088/0034-4885/74/12/124505.

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43

Yang, F., Z. Y. Liu, M. Y. Han, and F. G. Chang. "Photovoltaic effect in iron-based SmO0.7F0.3FeAs superconductors." Journal of Physics D: Applied Physics 48, no. 21 (April 30, 2015): 215308. http://dx.doi.org/10.1088/0022-3727/48/21/215308.

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44

Coldea, Amalia I., Daniel Braithwaite, and Antony Carrington. "Iron-based superconductors in high magnetic fields." Comptes Rendus Physique 14, no. 1 (January 2013): 94–105. http://dx.doi.org/10.1016/j.crhy.2012.07.003.

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45

Böhmer, Anna E., and Christoph Meingast. "Electronic nematic susceptibility of iron-based superconductors." Comptes Rendus Physique 17, no. 1-2 (January 2016): 90–112. http://dx.doi.org/10.1016/j.crhy.2015.07.001.

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46

Carretta, Pietro, and Giacomo Prando. "Iron-based superconductors: tales from the nuclei." La Rivista del Nuovo Cimento 43, no. 1 (January 2020): 1–43. http://dx.doi.org/10.1007/s40766-019-0001-1.

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47

Ovchenkov, Y. A., D. A. Chareev, V. A. Kulbachinskii, V. G. Kytin, D. E. Presnov, O. S. Volkova, and A. N. Vasiliev. "Highly mobile carriers in iron-based superconductors." Superconductor Science and Technology 30, no. 3 (February 6, 2017): 035017. http://dx.doi.org/10.1088/1361-6668/aa570a.

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48

LIANG, FANGYING. "THERMODYNAMIC PROPERTIES OF IRON-BASED SUPERCONDUCTOR." Modern Physics Letters B 25, no. 31 (November 21, 2011): 2363–70. http://dx.doi.org/10.1142/s0217984911027674.

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We consider a modified time-dependent Ginzburg-Landau model (TDGL) and layer model of Lawrence–Doniach to study the thermal properties in iron-based superconductors. We try to calculate the specific heat, and obtain some formulae. The expressions will be useful in the discussions of some of the most recent experimental data.

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49

Tajima, Hiroyuki, Pierbiagio Pieri, and Andrea Perali. "Hidden Pseudogap and Excitation Spectra in a Strongly Coupled Two-Band Superfluid/Superconductor." Condensed Matter 6, no. 1 (February 7, 2021): 8. http://dx.doi.org/10.3390/condmat6010008.

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We investigate single-particle excitation properties in the normal state of a two-band superconductor or superfluid throughout the Bardeen–Cooper–Schrieffer (BCS) to Bose–Einstein-condensation (BEC) crossover, within the many-body T-matrix approximation for multichannel pairing fluctuations. We address the single-particle density of states and the spectral functions consisting of two contributions associated with a weakly interacting deep band and a strongly interacting shallow band, relevant for iron-based multiband superconductors and multicomponent fermionic superfluids. We show how the pseudogap state in the shallow band is hidden by the deep band contribution throughout the two-band BCS-BEC crossover. Our results could explain the missing pseudogap in recent scanning tunneling microscopy experiments in FeSe superconductors.

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50

Singh, Udai R., Seth C. White, Stefan Schmaus, Vladimir Tsurkan, Alois Loidl, Joachim Deisenhofer, and Peter Wahl. "Evidence for orbital order and its relation to superconductivity in FeSe0.4Te0.6." Science Advances 1, no. 9 (October 2015): e1500206. http://dx.doi.org/10.1126/sciadv.1500206.

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The emergence of nematic electronic states accompanied by a structural phase transition is a recurring theme in many correlated electron materials, including the high-temperature copper oxide– and iron-based superconductors. We provide evidence for nematic electronic states in the iron-chalcogenide superconductor FeSe0.4Te0.6 from quasi-particle scattering detected in spectroscopic maps. The symmetry-breaking states persist above Tc into the normal state. We interpret the scattering patterns by comparison with quasi-particle interference patterns obtained from a tight-binding model, accounting for orbital ordering. The relation to superconductivity and the influence on the coherence length are discussed.

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